Compile Time DIのススメ

by s10myk4

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$PNQJMFUJNF%*ͷεεϝ ࢢϲ୩(FFL˒/JHIU4DBMB.BUTVSJิ׬ܭը

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ࣗݾ঺հ w Լଜ๎೭ 4IJNPNVSB5PNPZVLJ w !TNZL w ηϓςʔχɾΦϦδφϧ w ਓࣄؔ࿈ͷϓϩδΣΫτͰ͸ɺओʹΞʔΩςΫτͱ 10Λ݉೚

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1MBZͷ%FGBVMU͔ͩΒ(VJDF࢖ͬͯͨਓʹબ୒ࢶͷͭ ʹͳͬͯ΋Β͑ͨΒ͍͍ ίϯηϓτ

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ংষ 3VOUJNF%*ͱ.BOVBM%* .BD8JSFʹ͍ͭͯ %*ͷओཁͳέʔεͰͷ.BD8JSFͰͷྫ .BD8JSFͷσϝϦοτ "QQMJDBUJPO-PBEFSͱ͍͏ଘࡏ ·ͱΊ ΞδΣϯμ

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ͦ΋ͦ΋ڽͬͨ%*ख๏͕ॏཁͳͷͰ͸ͳ͘ɺ  ίϯϙʔωϯτͷґଘؔ܎ͷ੔ཧͭͭ͠ɺґଘؔ܎ͷ ߏஙΛγϯϓϧʹ࣮ݱ͍ͨ͠ Ϟνϕʔγϣϯ

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%*ʁ w ίϯϙʔωϯτؒͷؔ܎͸ΠϯλϑΣʔεΛ༻͍ͯ هड़͠ɺ۩ମతͳίϯϙʔωϯτΛࢦఆ͠ͳ͍ɻ  ۩ମతʹͲͷίϯϙʔωϯτΛར༻͢Δ͔͸ผͷί ϯϙʔωϯτ΍֎෦ϑΝΠϧ౳Λར༻͢Δ͜ͱͰɺ ίϯϙʔωϯτؒͷґଘؔ܎Λബ͘͢Δ͜ͱ͕Ͱ͖ Δ    8JLJࢀর

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1MBZ'8ͷ%*ࣄ৘ w +43ʹج͍ͮͨ3VOUJNF%*ͱ$PNQJMFUJNF %*ͷ྆ํΛαϙʔτ w σϑΥϧτ͸(VJDF w جຊ͸DPOTUSVDUPS*OKFDUJPO

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%*ͷख๏ͷϝϦσϝ

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3VOUJNF%*ͷར఺ (VJDF w ϝϦοτ  ϘΠϥʔϓϨʔτίʔυΛ཈͑Δ  w σϝϦοτ  DPNQJMF࣌ʹґଘؔ܎ͷߏஙΛݕূͰ͖ͳ͍  ΞϊςʔγϣϯIFMM  طଘίʔυʹґଘ͕૿͑Δ

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$PNQJMF5JNF%*ͷར఺ w ϝϦοτ  ܕ҆શ ίϯύΠϧ࣌ʹґଘؔ܎͕ຬͨ͞ΕΔ͜ͱΛݕূͰ͖Δ   ϓϨʔϯͳ4DBMBͱίϯετϥΫλύϥϝʔλΛ࢖͏͚ͩ  ॊೈੑ͕ߴ͍  SVOUJNFͰͷSFqFDUJPO͕ඞཁͳ͍ͷͰɺ͔͔ᷮ΋͠Εͳ͍͕ى ಈ͕࣌ؒ୹͘ͳΔ w σϝϦοτ  ίʔυྔϘΠϥʔϓϨʔτ૿͑Δ  ίϯύΠϧ͕࣌ؒ৳ͼΔ 

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$PNQJMF5JNF%*ͷީิ w 5IJO$BLF1BUUFSO  ඪ४ͷݴޠػೳ͚ͩͰ࣮ݱͰ͖Δ͕ɺϚχϡΞϧͰґ ଘؔ܎Λఆٛ͢Δͷਏ͍ɺϘΠϥʔϓϨʔτ͕૿͑Δ w 3FBEFS.POBE  ఆٛͱ࣮ߦΛ෼཭͢Δ͜ͱͰ%*Λ࣮ݱ  ґଘ͕ෳࡶʹͳΔͱѻ͍ʹ͍͘ w BVUPXJSJOHCZNBDSPT  .BD8JSF

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"VUPXJSJOHʹΑΔ  $PNQJMF5JNF%* w Լهͷ՝୊Λվળ w ϚχϡΞϧͰґଘؔ܎Λఆٛ͢Δͷਏ͍ w ϘΠϥʔϓϨʔτ͕૿͑Δ

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.BD8JSF

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؆୯ͳྫ XJSFͯ͠Δͱ͜Ζ͕ϚΫϩͰԼهʹల։

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͋Εɺɺ

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ίϯύΠϧ࣌ʹґଘؔ܎ͷݕ ূͰ͖ͯɺɺ

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ґଘؔ܎ΛϚΫϩ͕ղܾͯ͠ ͘Εͯɺɺ

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.BD8JSF࠷ߴʘ ?Т? ʗ  γϯϓϧʂγϡοͱͯ͠Δʂ

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%*ͷओཁͳέʔεͰͷ NBDXJSFͷྫ Ұ෦(VJDFͰͷํ๏ͱൺֱ͠ͳ͕Βɺ%*Ͱͷओཁ ͳέʔεΛNBDXJSFͰͲΜͳײ͡Ͱ࣮ݱͰ͖Δ͔ ؆୯ͳྫΛڍ͛Δ

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MB[ZWBMͰͷએݴ WBMͰఆٛ͢ΔͱΠϯελϯε͕ॳظԽ͞ΕΔલʹ ࢀর͠Α͏ͱ͢ΔͱOVMMʹͳΔ    MB[ZWBMͰఆٛ͢ΔͱΦϯσϚϯυͰద੾ͳॳظ ԽॱংΛࣗಈͰܭࢉ͞ΕΔ

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͋Δܕʹରͯͭ͠ͷ࣮૷Λؔ࿈ ͚ͮΔ w (VJDF -JOLFECJOEJOH w .BD8JSF

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͋Δܕʹ۩ମతͳΠϯελϯεΛੜ੒͠ɺ όΠϯυ͢Δ w (VJDF  *OTUBODF#JOEJOHTPS1SPWJEFT.FUIPETPS 1SPWJEFS#JOEJOHT    Πϯελϯεੜ੒ͷෳࡶ౓ʹΑͬͯ࢖͍෼͚ΒΕΔ ͭͷํ๏͕ఏڙ͞Ε͍ͯΔ

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͋Δܕʹ۩ମతͳΠϯελϯεΛੜ੒͠ɺ όΠϯυ͢Δ w *OTUBODF#JOEJOHT    w 1SPWJEFS#JOEJOHT

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͋Δܕʹ۩ମతͳΠϯελϯεΛੜ੒͠ɺ όΠϯυ͢Δ w .BD8JSF'BDUPSZ.FUIPE

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ܕύϥϝʔλΛ࢖ͬͨ%* w (VJDF5ZQF-JUFSBM w .BD8JSF

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ಉҰͷܕͰෳ਺Πϯελϯε #FSSZ!!#MVFPS5BHHFE<#FSSZ #MVF> XJSF<#FSSZ>UBHHFE8JUI<#MVF>

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4DPQF w (VJDF  σϑΥϧτͰ͸஋Λཁٻ͞ΕΔ౓ʹɺ৽͍͠Πϯελϯε࡞੒    !4JOHMFUPO !4FTTJPO4DPQFE !3FRVFTU4DPQFEͳͲͰΠ ϯελϯεͷϥΠϑλΠϜΛมߋͰ͖Δ  w .BD8JSF  MB[ZWBMͰએݴγϯάϧτϯ  EFGཁٻ͞ΕΔ౓ʹ৽͍͠ΠϯελϯεΛ࡞੒ͯ͠ฦ͢  4DPQFUSBJUΛ࢖ͬͯSFRVFTU΍TFTTJPOͷ༷ͳಠࣗͷ TDPQFΛఆٛͰ͖Δ

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.PEVMFΛίϯύΫτʹอͭ

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5FTUJOH جຊతʹ͸DPOTUSVDUPS*OKFDUJPOͳͷͰɺ  ίϯϙʔωϯτͷ୯ମςετͰ͸ɺ  ؆୯ʹNPDLΛͤ͞Δ

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5FTUJOH w ςετ࣌ʹςετ༻ͷ%#ʹ੾Γସ͑ͨΓͰ͖Δ

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.BD8JSFͦͷଞػೳ w 6TJOHJNQMJDJUQBSBNFUFST w .VMUJ8JSJOH w "LLBJOUFHSBUJPO w FUDʜ

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.BD8JSFͷσϝϦοτ w ίϯύΠϧ͕࣌ؒ৳ͼΔ w FYQFSJNFOUBMͳػೳ NBDSPT ʹґଘͯ͠ ͍Δ

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"QQMJDBUJPO-PBEFSͱ͍͏ଘࡏ

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"QQMJDBUJPO-PBEFSͱ͸ (VJDFͷ৔߹͸ɺ(VJDF"QQMJDBUJPO#VJMEFS͍ͬͯ͏ϔϧύʔ͕ ఏڙ͞Ε͍ͯͯSFGFSFODFDPOGʹඪ४Ͱઃఆ͞ΕͯͨͷͰ ಛ ʹҙࣝ͠ͳͯ͘ࡁΜͩ   ΞϓϦέʔγϣϯࣗମͰߏஙͰ͖ͳ͍Α͏ͳίϯςΩετΛ༩ ͑ΒΕͯ   ΞϓϦέʔγϣϯΛΠϯελϯεԽ͢Δ໾ׂ "QQMJDBUJPO-PBEFS಺Ͱίϯϙʔωϯτͷґଘؔ܎ΛղܾͰ͖ ΔΑ͏ʹͯ͋͛͠Δඞཁ͕͋Δ

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·ͱΊ .BD8JSFͰͷDPNQJMFUJNF%*΋ݒ೦఺͸͋Δ΋ͷͷɺ 5IJODBLFQBUUFSOͷσϝϦοτͰ͋ͬͨίʔυྔ΍Ϙ ΠϥʔϓϨʔτ͕ۃྗগͳ͘ɺ$PNQJMFUJNF%*Λ࣮ ݱͰ͖Δͷ͸ͱͯ΋ྑ͍  ػೳ΋ॆ࣮͓ͯ͠Γɺ࢖͍ํ΋γϯϓϧͰ͋Δ

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͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠